Deadlock for jail doors



vMmym, 1929.

J. T. WHITEHOUSE DEADLOCK FOR vJAIL DOORS Filed April 9, 192'!" lll\\\\\\ y Patented May 2l, 1929.

" UNUED STATES INEM"10FFICFg z t JOHN l"1'. wnITEHoUsE, or CLEVELAND, oHIo, AssI'G'NoR Tov THE `vAiaunomi wonxscoMPANY, oEcLEvELANn, voH1o,.A CORPORATION or `01110. Y

mazADLooizl Eon Jair. rocas.'

vApplication nl ed pin s',

Y This invention yrelates to the locks` of doors for jails or-other like institutions,1ts obJect being to provide an improved lock which is sturdy, strongand well yfable to withstand ef- I' forts of destruction, which is of simple con-- struction, capable of production at lowcost land ofsim le `operat1on,and in which the`Y mechanism -1s 4of simple form Vand unlikely, to

get out of order, and,"further, a lock of this nd provided .with simple Iandfellicient means for protecting itnot'only. against picking'orattempts to open' the lock-by an unauthor-ized person, but which also prevents the turnkey or other authorized person 1 from `l5A damaging their locks orfkeys by inadvertently attempting to open alock withithe'wrong key,all as' will more fully appear, together-l With Yother advantages more apparent to thoseskilled in the'art. l i' In the drawings which represent one suitable embodiment ofthe invention. 'Fig'l is a front elevation witha part of. the casing cover broken'outl tofexpose interior parts; Fig'.` 2 isasectional plan view on the line 2 2-,

Fig. 1; Fig.- 3 is a detail sectional plan view,

corresponding to Fig2, and showing the lock cover andits'special wards; Fig. 4 is a vertical section along the line 4-'4, Fig. 3 ,Fig 5 is a front elevation, corresponding to- Fig.

1 and showingfthelock'hubrrand Fig. 6is av detail view'of a key suitable' for actuating the The lock casing is of simple' form 'suitable' for insertion and vsecurementl in a recess 'of the door. It' comprisesahollow -bodyportionsl .and la cover plate '2 secured. thereto by screws 3,the bodvhavingnopenings- 4 for at!` f Inthe cavityy Y taching thelflo'cktothe'door. of theI lock, and operating'through van openV` 40 ing in l'one end thereof is "a bolt'which may `he `protected against sawing operationsbythe pins 6 of toolfresisting metal castth'ere` in. v The central portion of -thebolt'is hol- Iowed out or open, providing two parallel 46 `arms 7 with'a space lbetween them and the rear bridge S eonnecting. them. vvAssh'own inj Fig; 2that portionof the bolt lying within the casing is of reduced thickness to provide,

space for the lock tumblers.` and this portion 50 of the bolt has attached thereto a lateralprojriee'ction` 9 adapted to pass back and forthV through; gates or openings inga series.' four beingy shown, of swinging-tumbler'szl. said gates, marked 1,1 leading tolbackfrecesses 12. The tn'mblersr aremounted'to swing on a` suit-y vwith the casing body 1 Y Vmg body and cover` may be made as die vcast-- but to.` avoid mischanc'e. as by y normally move'it tothe positionshownin 19.27. serial No. 182,369.'

pin -13 'cast integral and, l1ndeed,'the cas able post, such'as a ingsto reduce thecost.. Eachgtwo adjacent tumblers are separated by spacing .Washers 114 and each thereof at' about 'thecenter ofthe lock Vis .provided with ai recess or' through .Opening l5thr0ughwhich the key passes, and". l' il Y' l the upper edges 15 ofV all .of which openings' are engaged by the wards of the keyftomove 05 the tumblers toproper position to enablethe projection19 to-'move 4back and forth throughv the= gates 11 as thebolt is moved.v Obviouslyk the 4severalwards lof thegkey willfvaryvin height and-the gates 11 on` different tumblers will bev located at varying distances rvbetween theirside edges to require special/positioning ofea'ch tumbler for actuation ofthe lock. The tumblers may operate gravityl when' the lock liesifn the position shown inwF-ig. 1', o ne tumbler sticking,` and to enable the lock'to be used in other positions, 1I also kprovideeach tumbler with Isuitable means such as the spring 16 to Fig. 1i

Coaxial with the key opening incover 2 'e and rotatable in the boss 'ofthe casing bodyvv 1 is alock hub 17 shown in detail in Fig. 4 and v provided .with a` `central. :opening through which theHkey-extends", and two inward pro-` yjections or teeth 18 into saidk openingj'andon its peripheryfwithlteeth 19' engaging rack teeth 20 on the lock bolt. Rotation ofxthe: lock huh by thekeyinoves the bolt'hackand 59o forth, ass-will be `readily understood. I i

vReferring to Fig.1;l, the key` is inserted i with its'V wards-extending horizontally and'A therefore lying adjacent to the' projections 18v of the lock-hub. To retract the bolt the key is turned counter clockwise andl `it rotates for.

labout degrees j'without producing movement of vthellockh'ub.` Finally its wards ,'en-

gage the vprojections'lgS at the same time that i its wards have'moved the tumblersfto bolt're'e loo .l lease position, whereupon ^continued "counter Y clockwise keyfrotation turns'thehub and-re-V tracts'j the bolt, its ""pro'jection'f9` passingVv through the gates 11. and enteringthe recesses i 12. Continuation O15-180"- degree keymove-f105 ment permitsthe tumblers to returnto bolt ,locking position, with the bolt locked retracts. The` reverse operation is sir'nilarandv requires Ilofdescription.; v f

. 1 l'lfhe'fkeys ofthis kind? are'cus- -1110 j tomarily not marked or identified, to prevent prisoners 'from acquiring from the key "any intormation of what lock 1t controls. As a result the turnkey or other authorized person occasionally attempts to unlock a lock with other thanthe correct key to the consequent damage to'either key or lock. Moreover, these keys must be so made as to enable the lock to be actuated `from eitherl side. Accordingly the present invention provides the lock with special Wards Which prevent actuation or attempted actuation in any lock of other than the proper key, but nevertheless allows for proper symmetry of the `key for actuation of-thelock from either side.` vAs shown in FigsdQ Vand 3, one of the parts oLt thelock casing such as the cover is provided with an inwardlyextending boss 240i semi'-` circular ormjwh'en'viewed in elevation, and the inner surface of which is turned out to provide a series of wards 21 for cooperation with the key and designed to prevent any but the proper key from being Worked in the lock. One suitable key for the lock is shown in VFig. 5, comprising a shank 22`and Wards which may be consideredto be quartered into four members 2313123223, and 23d. '.Upon insertion of the key into the lockv through Vthe cover or from the bottom in Fig. 2 it will be obvious thattheivards of member 23d actuate the tumblers, the Wards 23 pass the wardsQtof the lock cover andtthe wards 23 and 23h engagethe projections 18 and turn theloc'k fall. Whenthe same key is inserted through the body 1 ofthe lock `casing or from the top in Fig. 2, the Wards Q3 and 23"v actuate the tumblers and pass the' Wards 24,. vhlile the Wards 23 and 28d actuate the lock This lock is quite satisfactory for the purpose and not only protects the keyagainst damage by the Wrong lock, but also the lock against injury by thekeyy,

fvVhat Iclaimis; f T Y f l, In a' lock, a casing having a keyA receiving and supporting aperture, -abolt slidable in said casing, a plurality of tumblers `in 'said easing adaptedforA movement therein to control said bolt movement and arranged'for protects individual engagement by a corresponding plurality of 'Wards of` a key inserted through said aperture and turned to effect said'movement, said casing having a boss adjacent said aperture, said bossV having -vvards in the planes of theit'ulnblers andV adaptedito prevent turning; `in said-lck of a key inserted through said aperture and having "Ward portions` symmetrical about Vthe turningv axis of the key and' exceeding the necessary dimensions `to properly'actuate said tumblers 2L In a lock, a casing having agkey receiving and supporting aperture, :a bolt slidable in said casing, a plurality 'of tumblers in said casing adapted for movement therein to conl trol said bolt movement and havingthrough sionstoproperlyactuate said tumblers.

l3.In a lock, al casing having aligned `key receiving and supportingapertures, .a bolt slidahle therein, a plurality `of tumblers in saidcasing adapted for movement therein ,tot control said bolt movementandhaving par-` allel recessedvvard `portions arranged for individual Vengagement byV a corresponding plurality of Wards otra key'inserted through either of said aperturesand extending Vinto said recessed tumblerportions and turned in said casing to effect bolt movement, said cas-l ing having a boss extending Within said re cessed tumblerportions, and said boss havf ing Wards in the planes of the tumbler Wards and adapted to prevent turning in said lock of a key having Wards exceedingp'redeterlmined dimensions.

, 4. ln alock, a casinghaving aligned key receiving. and supporting apertures,"a nbolt -slidable in said casingga hub having ar bolt engaging' portion and mounted' for rotation in said easing coaxialwith saidapertures to slide said bolt, a plurality lof tumblers in said casing adapted :for movement therein :to move said bolt and having'recessed'fvvardportions; arranged :for `individual engagement by a. corresponding plurality of-ywards o-a key inserted `ineither f said apertures `and exl tending into said tumbler recessed portions and turnediii said casing to eiect said move-` ment. said hub having a'portion adapted for engagement by a key Ward `portin after roi' tation otsaid key in said lock ,to effect" said tumblerl movement, a boss secured iin `said casing adjacent one of said apertures and extending f Within said tumbler recessed `portions, said boss-having-Wardsinrthe planes ofthe tumbler Wards and adaptedto preventY turni-ng in saidilock of a key, having-Wards exceeding predetermined dimenslons.

` Ina lock, acasing having aligned keyr reeeivingvand supporting apertures, a bolt `slidable in said casing, a hub having a bolt engaging portion and mountedadjacent one oi' said apertures for rotation yin said" easing coaxial with said apertures to slide said bolt, a plurality of tumblers in said casing adapted for movement therein. teclear saiddioltand having recessed ward portions arranged for individual Aengagement` by a corresponding plurality of Wards of a key" inserted in either otsaid apertures and turnedvin-saidcasing/to icoV Y effect said movement, said hubv having por-V tions adapted for engagement by anotherkey ward portion after rotation of a key in said lock to effect said tumblermovement, a boss secured in said Casing adjacent the other of said apertures and extending Within said tumbler recessed portions and having wards in the planes of the tumbler Wards and adapted to prevent turning in said lock of a key having Wards exceeding predetermined di.

two axes.

nature.

JOHN fr.. WHITEHOUSE.

In testimony whereof I hereby -aiix my sigz 

